मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Colloidal solutions do not show brownian motion. Reason: Brownian motion is responsible for stability of sols.

Advertisements
Advertisements

प्रश्न

Assertion: Colloidal solutions do not show brownian motion.

Reason: Brownian motion is responsible for stability of sols.

पर्याय

  • Assertion and reason both are correct and the reason is correct explanation of assertion.

  • Assertion and reason both are correct but reason does not explain assertion.

  • Assertion is correct but reason is incorrect.

  • Both assertion and reason are incorrect.

  • Assertion is incorrect but reason is correct.

MCQ
Advertisements

उत्तर

Assertion is incorrect but reason is correct.

Explanation:

Colloidal particle shows Brownian movement. The Brownian movement has a stirring effect which does not permit the particles to settle and thus, is responsible for the stability of sols.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Surface Chemistry - Exercises [पृष्ठ ७३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 5 Surface Chemistry
Exercises | Q 75 | पृष्ठ ७३

संबंधित प्रश्‍न

Out of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.


Give reasons for the following observations: Leather gets hardened after tanning.


Define the following term : Brownian movement


What modification can you suggest in the Hardy-Schulze law?


Explain what is observed when an electrolyte NaCl is added to hydrated ferric oxide sol.


Explain what is observed when an electric current is passed through a colloidal sol?


Explain the term Tyndall effect.


A colloidal sol is prepared by the given method in the figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube? How is the solution represented? 


A colloidal sol is prepared by the given method in the figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube? How is the sol represented?


Which of the following will show Tyndall effect?


What happens when a lyophilic sol is added to a lyophobic sol?

(i) Lyophobic sol is protected.

(ii) Lyophilic sol is protected.

(iii) Film of lyophilic sol is formed over lyophobic sol.

(iv) Film of lyophobic sol is formed over lyophilic sol.


Which phenomenon occurs when an electric field is applied to a colloidal solution and electrophoresis is prevented?

(i) Reverse osmosis takes place.

(ii) Electroosmosis takes place.

(iii) Dispersion medium begins to move.

(iv) Dispersion medium becomes stationary.


What causes brownian motion in colloidal dispersion?


Why does leather get hardened after tanning?


Gold number is associated with:-


The important factor in the stabilization of a colloidal solution is ______


Why a negatively charged sol is obtained when AgNO3 solution is added to KI solution?


In order to cause coagulation of 100 ml Arsenious sulphide sol 111.7 mg of 2 M NaCl solution is used, the coagulation value of NaCl will be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×